Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. sysfs_warn_dup+0x83/0xa0 fs/sysfs/dir.c:30 WARNING: CPU: 0 PID: 4438 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 sysfs_create_dir_ns+0x178/0x1d0 fs/sysfs/dir.c:58 Kernel panic - not syncing: panic_on_warn set ... create_dir lib/kobject.c:69 [inline] kobject_add_internal+0x335/0xbc0 lib/kobject.c:227 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xf9/0x150 lib/kobject.c:436 gfs2_sys_fs_add+0x1ff/0x580 fs/gfs2/sys.c:652 fill_super+0x86f/0x1d70 fs/gfs2/ops_fstype.c:1118 gfs2_mount+0x587/0x6e0 fs/gfs2/ops_fstype.c:1321 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:2509 [inline] do_new_mount fs/namespace.c:2512 [inline] do_mount+0xea4/0x2bb0 fs/namespace.c:2842 SYSC_mount fs/namespace.c:3058 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3035 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4430da RSP: 002b:00007ffc35db3528 EFLAGS: 00000217 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430da RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffc35db3540 RBP: 00000000006cb018 R08: 0000000020000300 R09: 000000000000000a R10: 0000000020000000 R11: 0000000000000217 R12: 746f72706b636f6c R13: 6c6261746b636f6c R14: 0030656c69662f2e R15: 0000000000000004 CPU: 0 PID: 4438 Comm: syzkaller686586 Not tainted 4.16.0-rc7+ #8 ------------[ cut here ]------------ Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 kobject_add_internal failed for _ with -EEXIST, don't try to register things with the same name in the same directory. panic+0x1e4/0x41c kernel/panic.c:183 WARNING: CPU: 1 PID: 4437 at lib/kobject.c:238 kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 Modules linked in: CPU: 1 PID: 4437 Comm: syzkaller686586 Not tainted 4.16.0-rc7+ #8 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 __warn+0x1dc/0x200 kernel/panic.c:547 RSP: 0018:ffff8801b5bbf4a0 EFLAGS: 00010282 RAX: dffffc0000000008 RBX: ffff8801b4281190 RCX: ffffffff815b193e RDX: 0000000000000000 RSI: 1ffff10036b77e44 RDI: 1ffff10036b77e19 report_bug+0x1f4/0x2b0 lib/bug.c:186 RBP: ffff8801b5bbf598 R08: 1ffff10036b77ddb R09: 0000000000000001 R10: ffff8801b5bbf260 R11: 0000000000000000 R12: 1ffff10036b77e9a fixup_bug.part.10+0x37/0x80 arch/x86/kernel/traps.c:178 R13: 00000000ffffffef R14: ffff8801d3991948 R15: 1ffff10036b77e9e fixup_bug arch/x86/kernel/traps.c:247 [inline] do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296 FS: 0000000001d31880(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000a9d1b0 CR3: 00000001b5847005 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986 RIP: 0010:kobject_add_internal+0x8d4/0xbc0 lib/kobject.c:235 RSP: 0018:ffff8801b47274a0 EFLAGS: 00010282 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xf9/0x150 lib/kobject.c:436 RAX: dffffc0000000008 RBX: ffff8801b41d9150 RCX: ffffffff815b193e RDX: 0000000000000000 RSI: 1ffff100368e4e44 RDI: 1ffff100368e4e19 RBP: ffff8801b4727598 R08: 1ffff100368e4ddb R09: 0000000000000000 R10: ffff8801b4727260 R11: 0000000000000000 R12: 1ffff100368e4e9a R13: 00000000ffffffef R14: ffff8801d3991948 R15: 1ffff100368e4e9e gfs2_sys_fs_add+0x1ff/0x580 fs/gfs2/sys.c:652 fill_super+0x86f/0x1d70 fs/gfs2/ops_fstype.c:1118 kobject_add_varg lib/kobject.c:364 [inline] kobject_init_and_add+0xf9/0x150 lib/kobject.c:436 gfs2_sys_fs_add+0x1ff/0x580 fs/gfs2/sys.c:652 gfs2_mount+0x587/0x6e0 fs/gfs2/ops_fstype.c:1321 fill_super+0x86f/0x1d70 fs/gfs2/ops_fstype.c:1118 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 vfs_kern_mount fs/namespace.c:2509 [inline] do_new_mount fs/namespace.c:2512 [inline] do_mount+0xea4/0x2bb0 fs/namespace.c:2842 gfs2_mount+0x587/0x6e0 fs/gfs2/ops_fstype.c:1321 mount_fs+0x66/0x2d0 fs/super.c:1222 vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 SYSC_mount fs/namespace.c:3058 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3035 vfs_kern_mount fs/namespace.c:2509 [inline] do_new_mount fs/namespace.c:2512 [inline] do_mount+0xea4/0x2bb0 fs/namespace.c:2842 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 SYSC_mount fs/namespace.c:3058 [inline] SyS_mount+0xab/0x120 fs/namespace.c:3035 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4430da RSP: 002b:00007ffc35db3528 EFLAGS: 00000217 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430da RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffc35db3540 RBP: 00000000006cb018 R08: 0000000020000300 R09: 000000000000000a R10: 0000000020000000 R11: 0000000000000217 R12: 746f72706b636f6c R13: 6c6261746b636f6c R14: 0030656c69662f2e R15: 0000000000000004 Code: entry_SYSCALL_64_after_hwframe+0x42/0xb7 00 RIP: 0033:0x4430da 00 RSP: 002b:00007ffc35db3528 EFLAGS: 00000217 00 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004430da 00 RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007ffc35db3540 RBP: 00000000006cb018 R08: 0000000020000300 R09: 000000000000000a fc ff R10: 0000000020000000 R11: 0000000000000217 R12: 746f72706b636f6c df R13: 6c6261746b636f6c R14: 0030656c69662f2e R15: 0000000000000004 48 c1 ea 03 80 3c 02 00 0f 85 aa 00 00 00 48 8b 13 48 c7 c6 00 24 d6 87 48 c7 c7 60 21 d6 87 e8 4c b3 62 fa <0f> 0b e9 1d fb ff ff e8 30 9e 92 fa 0f 0b e9 29 fe ff ff e8 24 ---[ end trace 0eedf20a0a30ae57 ]--- Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..